TM 9-4120-385-14
Figure 5-2. Leak
Test, Nitrogen Bottle and
Regulation Setup.
11. Open nitrogen regulator valve slowly.
12. Open high pressure service valve and low pressure service (suction) valve. D O
NOT TURN ON AIR CONDITIONER.
13. Slowly open both valves on charging manifold and charge system to 350 paig
(25 kg/cm).
14. Close all valves.
CAUTION
The electronic leak detector is sensitive to the presence of
refrigerant gas in the atmosphere. When refrigerant gas is present
in the atmosphere of the work area, false indications can result.
Use in a well ventilated but draft free area.
NOTE
Tester must be calibrated for a pure refrigerant leak rate of
0.1 ounce (2.83 g) per year.
15. Turn on electronic leak detector and slowly pass probe around all points in the
refrigeration system.